66875920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20389}}^1$

素因数の和:20443

約数の個数: 40

約数和(自身を含む): 159286680

約数和(自身を除く): 92410760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 20389, 40778, 81556, 101945, 163112, 203890, 326224, 407780, 815560, 835949, 1631120, 1671898, 3343796, 4179745, 6687592, 8359490, 13375184, 16718980, 33437960, 66875920]

約数ペア:

[(1, 66875920), (2, 33437960), (4, 16718980), (5, 13375184), (8, 8359490), (10, 6687592), (16, 4179745), (20, 3343796), (40, 1671898), (41, 1631120), (80, 835949), (82, 815560), (164, 407780), (205, 326224), (328, 203890), (410, 163112), (656, 101945), (820, 81556), (1640, 40778), (3280, 20389)]